What is the global IPv6 address of the host in uncompressed format?

Explanation:
In the compressed format, the :: represents two contiguous hextets of all zeros. Leading zeros in the second, fifth, and sixth hextets have also been removed.

5 A network administrator has received the IPv6 prefix 2001:DB8::/48 for subnetting. Assuming the administrator does not subnet into the interface ID portion of the address space, how many subnets can the administrator create from the /48 prefix?

16
256
409665536*

6 What is the interface ID of the IPv6 address 2001:DB8::1000:A9CD:47FF:FE57:FE94?